Trait cipher::StreamCipherCore

source · [−]

pub trait StreamCipherCore: BlockSizeUser + Sized {
    fn remaining_blocks(&self) -> Option<usize>;
    fn process_with_backend(
        &mut self, 
        f: impl StreamClosure<BlockSize = Self::BlockSize>
    );

    fn write_keystream_block(&mut self, block: &mut Block<Self>) { ... }
    fn write_keystream_blocks(&mut self, blocks: &mut [Block<Self>]) { ... }
    fn apply_keystream_block_inout(&mut self, block: InOut<'_, '_, Block<Self>>) { ... }
    fn apply_keystream_blocks(&mut self, blocks: &mut [Block<Self>]) { ... }
    fn apply_keystream_blocks_inout(
        &mut self, 
        blocks: InOutBuf<'_, '_, Block<Self>>
    ) { ... }
    fn try_apply_keystream_partial(
        self, 
        buf: InOutBuf<'_, '_, u8>
    ) -> Result<(), StreamCipherError> { ... }
    fn apply_keystream_partial(self, buf: InOutBuf<'_, '_, u8>) { ... }
}

Expand description

Block-level synchronous stream ciphers.

Required methods

source

fn remaining_blocks(&self) -> Option<usize>

Return number of remaining blocks before cipher wraps around.

Returns None if number of remaining blocks can not be computed (e.g. in ciphers based on the sponge construction) or it’s too big to fit into usize.

source

fn process_with_backend(
&mut self,
f: impl StreamClosure<BlockSize = Self::BlockSize>
)

Process data using backend provided to the rank-2 closure.